Short, catchy vocal clips like this one tend to travel through soundboards and short-form video, where a chant is easy to recognise, copy and reuse in new contexts. The Kotoro bala bala bala sound works because its rhythm is instantly memorable, so editors can drop it into reaction videos, gaming clips and meme edits and have viewers understand the joke at once. Its continued use comes from that flexibility: it is short enough for a quick gag, upbeat enough to lift a flat moment, and repetitive enough to become an in-joke among people who have heard it before.